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基于GIS和RUSLE的黄土高原小流域土壤侵蚀评估
引用本文:秦 伟,朱清科,张 岩.基于GIS和RUSLE的黄土高原小流域土壤侵蚀评估[J].农业工程学报,2009,25(8):157-163.
作者姓名:秦 伟  朱清科  张 岩
作者单位:1. 中国水利水电科学研究院泥沙研究所,北京,100044;北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
2. 北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
基金项目:“十一五”国家科技支撑项目(2006BAD03A03);国际泥沙研究中心生态建设综合效益评价课题
摘    要:对基于上坡汇流面积的坡长因子算法进行改进,提出考虑上坡土地利用/覆盖对汇流影响的坡长因子算法,运用GIS和RUSLE评估黄土高原四面窑沟流域的土壤侵蚀强度及其与环境因素的关系。结果表明,流域多年平均侵蚀强度 4 399.79 t/(km2·a),属中度侵蚀;侵蚀强度和侵蚀量均随坡度增加而显著增加,80.59%的侵蚀量来源于占流域总面积59.06%的25°以上坡度带;不同坡向的侵蚀强度表现为正阳坡>半阳坡>半阴坡>正阴坡,其中,占总面积45.07%的阳坡产生56.50%的侵蚀量;不同土地利用类型中,占总面积57.07%的草地产生96.37%的侵蚀量,成为目前流域内主要侵蚀产沙源。研究为应用修正通用土壤流失方程在黄土高原进行侵蚀评估提供技术范例,为该区侵蚀防治和水土资源利用提供有益参考。

关 键 词:土壤,侵蚀,地理信息系统,修正通用土壤流失方程,黄土高原
收稿时间:6/9/2008 12:00:00 AM
修稿时间:7/3/2009 12:00:00 AM

Soil erosion assessment of small watershed in Loess Plateau based on GIS and RUSLE
Qin Wei,Zhu Qingke and Zhang Yan.Soil erosion assessment of small watershed in Loess Plateau based on GIS and RUSLE[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(8):157-163.
Authors:Qin Wei  Zhu Qingke and Zhang Yan
Institution:1.Department of Sedimentation;China Institute of Water Resources and Hydropower Research;Beijing 100044;China;2.Key Laboratory of Soil and Water Conservation and Desertification Combating;Ministry of Education;Beijing Forestry University;Beijing 100083;China
Abstract:The algorithm of slope length factor based on up-slop runoff area was mended and new algorithm of slope length factor considering the effect of land use/cover for up-slop runoff was produced.By using geographic information system(GIS) and the revised universal soil loss equation(RUSLE),the soil erosion intensity and its relationship with environmental factors in the Simianyaogou watershed,located at Loess Plateau were studied.The results showed that the average annual soil erosion intensity in the watershed...
Keywords:soils  erosion  geographic information system (GIS)  revised universal soil loss equation (RUSLE)  loess plateau
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